Date: Sun, 3 Jan 2021 18:19:49 GMT From: Alan Somers <asomers@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 17a82e6af8e2 - main - Fix vnode locking bug in fuse_vnop_copy_file_range Message-ID: <202101031819.103IJnpu009541@gitrepo.freebsd.org>
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The branch main has been updated by asomers: URL: https://cgit.FreeBSD.org/src/commit/?id=17a82e6af8e2bde543c9c2fbe3ce296d5b24ddc9 commit 17a82e6af8e2bde543c9c2fbe3ce296d5b24ddc9 Author: Alan Somers <asomers@FreeBSD.org> AuthorDate: 2021-01-01 20:49:30 +0000 Commit: Alan Somers <asomers@FreeBSD.org> CommitDate: 2021-01-03 18:16:20 +0000 Fix vnode locking bug in fuse_vnop_copy_file_range MFC-With: 92bbfe1f0d1f1c4436d1f064a16e5aaf682526ba Reviewed by: cem Differential Revision: https://reviews.freebsd.org/D27938 --- sys/fs/fuse/fuse_vnops.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/sys/fs/fuse/fuse_vnops.c b/sys/fs/fuse/fuse_vnops.c index f26f96b8be99..5bbde1e278c9 100644 --- a/sys/fs/fuse/fuse_vnops.c +++ b/sys/fs/fuse/fuse_vnops.c @@ -664,14 +664,6 @@ fuse_vnop_copy_file_range(struct vop_copy_file_range_args *ap) td = ap->a_fsizetd; pid = td->td_proc->p_pid; - err = fuse_filehandle_getrw(invp, FREAD, &infufh, incred, pid); - if (err) - return (err); - - err = fuse_filehandle_getrw(outvp, FWRITE, &outfufh, outcred, pid); - if (err) - return (err); - /* Lock both vnodes, avoiding risk of deadlock. */ do { err = vn_lock(outvp, LK_EXCLUSIVE); @@ -690,6 +682,14 @@ fuse_vnop_copy_file_range(struct vop_copy_file_range_args *ap) if (err != 0) return (err); + err = fuse_filehandle_getrw(invp, FREAD, &infufh, incred, pid); + if (err) + goto unlock; + + err = fuse_filehandle_getrw(outvp, FWRITE, &outfufh, outcred, pid); + if (err) + goto unlock; + if (ap->a_fsizetd) { io.uio_offset = *ap->a_outoffp; io.uio_resid = *ap->a_lenp;
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